Can anyone recommend a UK source for a Champ power supply (370V, 6.3V, 5V), 240V primary? I'd also read that the old Fenders used undersized power filter caps that were only just able to suppress mains hum (the Champ 5C1 has 3 x8uF). Should I use larger ones, if so how big and which ones do I change? And finally, I plan to add a switchable tone stack. Should I use a high insertion loss blackface design or a Baxandall? My thinking is that the blackface will lower the gain and give me a cleaner sounding Champ whereas the Baxandall will do a better job of cutting or boosting the mids (by adjusting treble and bass up or down together). Any advice appreciated.